Makita 8414D Manual De Instrucciones página 7

Drilling operation
CAUTION:
• Pressing excessively on the tool will not speed up the
drilling. In fact, this excessive pressure will only serve
to damage the tip of your bit, decrease the tool perfor-
mance and shorten the service life of the tool.
• There is a tremendous force exerted on the tool/bit at
the time of hole break through. Hold the tool firmly and
exert care when the bit begins to break through the
workpiece.
• A stuck bit can be removed simply by setting the
reversing switch to reverse rotation in order to back out.
However, the tool may back out abruptly if you do not
hold it firmly.
• Always secure small workpieces in a vise or similar
hold-down device.
• If the tool is operated continuously until the battery car-
tridge has discharged, allow the tool to rest for 15 min-
utes before proceeding with a fresh battery.
First, slide the action mode change lever so that it points
to the m marking. The adjusting ring can be aligned in
any torque levels for this operation. Then proceed as fol-
lows.
Drilling in wood
When drilling in wood, the best results are obtained with
wood drills equipped with a guide screw. The guide
screw makes drilling easier by pulling the bit into the
workpiece.
Drilling in metal
To prevent the bit from slipping when starting a hole,
make an indentation with a center-punch and hammer at
the point to be drilled. Place the point of the bit in the
indentation and start drilling.
Use a cutting lubricant when drilling metals. The excep-
tions are iron and brass which should be drilled dry.
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and the bat-
tery cartridge is removed before attempting to perform
inspection or maintenance.
Replacing carbon brushes (Fig. 13 & 14)
Remove and check the carbon brushes regularly.
Replace when they wear down to the limit mark. Keep
the carbon brushes clean and free to slip in the holders.
Both carbon brushes should be replaced at the same
time. Use only identical carbon brushes.
Use a screwdriver to remove the brush holder caps. Take
out the worn carbon brushes, insert the new ones and
secure the brush holder caps.
To maintain product SAFETY and RELIABILITY, repairs,
any other maintenance or adjustment should be per-
formed by Makita Authorized or Factory Service Centers,
always using Makita replacement parts.
ACCESSORIES
CAUTION:
• These accessories or attachments are recommended
for use with your Makita tool specified in this manual.
The use of any other accessories or attachments might
present a risk of injury to persons. Only use accessory
or attachment for its stated purpose.
If you need any assistance for more details regarding
these accessories, ask your local Makita service center.
• Drill bits
• Hammer drill bits
• Screw bits
• Grip assembly
• Depth rod
• Blow-out bulb
• Safety goggles
• Rubber pad assembly
• Foam polishing pad
• Wool bonnet
• Various type of Makita genuine batteries and chargers
For European countries only
Noise
The typical A-weighted noise level determined according
to EN60745-2-1:
For Model 8414D
Sound pressure level (
Sound power level (
Uncertainty (K): 3 dB (A)
For Model 8434D
Sound pressure level (
Sound power level (
Uncertainty (K): 3 dB (A)
For Model 8444D
Sound pressure level (
Sound power level (
Uncertainty (K): 3 dB (A)
Wear ear protection.
Vibration
The vibration total value (tri-axial vector sum) determined
according to EN60745-2-1:
For Model 8414D
Work mode: impact drilling into concrete
Vibration emission (
Uncertainty (K): 1.5 m/s
Work mode: drilling into metal
Vibration emission (
Uncertainty (K): 1.5 m/s
For Model 8434D
Work mode: impact drilling into concrete
Vibration emission (
Uncertainty (K): 1.5 m/s
Work mode: drilling into metal
Vibration emission (
Uncertainty (K): 1.5 m/s
ENG102-1
): 86 dB (A)
L
pA
): 97 dB (A)
L
WA
): 87 dB (A)
L
pA
L ): 98 dB (A)
WA
): 85 dB (A)
L
pA
L ): 96 dB (A)
WA
ENG203-1
2
a ): 10.0 m/s
h, ID
2
ENG302-2
2
or less
): 2.5 m/s
a
h, D
2
2
): 10.0 m/s
a
h, ID
2
ENG302-2
2
or less
): 2.5 m/s
a
h, D
2
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